Plughound
A person who is in the habit of experimenting with various rectal accessories, including but not limited to: dildos, anal beads, buttplugs, etc.
Be careful with Julie tonight, I hear she's a real plughound. You won't be able to sit for three days straight if you let her have her way.
Plughound
A person searching high and low in the boarding area at the airport for an available electrical socket for use in recharging his portable device of choice.
Move over so the plughound can recharge his laptop.